Wildfires along the West Coast in Oregon, Washington state and California have destroyed homes, scorched thousands of square miles of land and prompted several evacuations. Meanwhile, officials report that the cost of fighting wildfires has skyrocketed. The Obama administration and some in Congress say it's time to rethink how those dollars are spent. NPR's Brian Naylor reports.

BRIAN NAYLOR, BYLINE: In central Washington, watching the evening news has not been for the faint of heart.

(SOUNDBITE OF NEWS PROGRAM)

UNIDENTIFIED MAN: This is breaking news.

UNIDENTIFIED WOMAN: But first we're following breaking news from Central Washington right now - what can only be described as a firestorm. A monster fire has forced the evacuation of the towns of Pateros and much of the town of Brewster.

NAYLOR: That fire is still not fully contained, and officials say, more than 300 homes have been destroyed. Still, while it's no solace for those who live in the fire-struck areas, the government says that, so far, this fire season is below average. Jim Douglas is with the U.S. Department of the Interior.

(SOUNDBITE OF SPEECH)

JIM DOUGLAS: It's never good when we have fires that are threatening homes and high-value resources, but so far, generally, so good.

NAYLOR: Douglas, however, notes that weeks of high risk still lie ahead.

DOUGLAS: We are not out of the woods yet. We're going to have a lot of potential in California, in particular, and other parts of the country before the summer's done.

NAYLOR: Together, the Interior Department and the Forest Service, which bears the lion share of wildfire fighting responsibilities, have budgeted over a billion dollars for firefighting this year. That's five times more than 20 years ago, and even that may not be enough, if recent years are any guide. There are other costs associated with wildfires, says Rachel Cleetus, a senior climate economist with the Union of Concerned Scientists.

RACHEL CLEETUS: Damage to property, damage to people's livelihoods, public health costs, impacts on electric infrastructure, watersheds - so these costs are growing, and we've got to start taking steps to address these risks of wildfires.

NAYLOR: The Union of Concerned Scientists says, total expenses for wildfires can amount to 30 times the cost of putting one out. A study by the group says, some 1.2 million homes in 13 western states are at a high or very high risk of wildfires and that hotter fire seasons brought about by climate change are making things worse. Forest Service Chief Tom Tidwell says, the focus on protecting homes is one reason costs have grown so quickly.

CHIEF TOM TIDWELL: We're having to, first of all, protect homes, communities from fire. That drives the strategy. It's going to require a lot more engines. It's going to justify the use of more equipment. And it's just more difficult. There's no question. When there's homes involved, the costs go up.

NAYLOR: And as the costs go up, the government must divert money from other important functions, including fire prevention. Last year, about a half-billion dollars in such fire borrowing, as it's called, was needed. It's the biggest fires that burn through the most money. Last year's Rim Fire near Yosemite National Park cost more than $100 million to fight. So the Obama administration is proposing a new formula. Jim Douglas of the Interior Department says, it makes sense to pay for fighting those big fires, like the government pays for hurricanes and tornadoes damage.

DOUGLAS: That last one percent of our fire activity - the most severe - takes about 30 percent of our budget. And so our proposal is treat these the way we treat other natural disasters.

NAYLOR: So rather than having to take money from fire prevention, there would be an emergency fund, similar to the kind FEMA uses to pay for hurricane and tornado damage. That proposal has bipartisan support and is part of an emergency spending bill now moving through the Senate. Brian Naylor, NPR News, Washington. Transcript provided by NPR, Copyright NPR.